“The extent to which the party rises to the occasion [of a revolutionary upsurge] — that depends in the greatest degree on how widely [the Marxists have] known how to make their influence felt among the masses in the pre-revolutionary period...”

It depends on “the extent to which [they were] already successful in putting together a solid central core of politically well-trained worker activists with clear goals, how large the sum of all their political and organisational work has been”.

The socialist life of Werner Scholem deserves to be better known. The publication of Ralf Hoffrogge’s exhaustive biography, A Jewish Communist in Weimar Germany (Haymarket 2018), means that English readers now have the opportunity to appreciate his contribution.

Werner Scholem was born in Germany in December 1895. He joined the Socialist Workers’ Youth group as a teenager in 1912 and then the Social Democratic Party (SPD) on turning 18.

Immanuel Wallerstein died at the age of 88 on 31 August. He was one of the last great exponents of the 1950s-60s theory of imperialism known as “dependency theory”, and continued to write until only a few years ago.

He was born in New York, the son of Polish Jews fleeing antisemitism, and worked almost all his life in US universities. He named Marx first among those to whom he “acknowledged a continuing intellectual debt”.

While Davison’s overall tribute to Fine is both lucid and commendable, there are two significant aspects of Fine’s critical perspective that Davison left under-examined. These are, first, Fine’s understanding of the connections between antisemitism and racism and, second, his standpoint on Stalinism and anti-Stalinism.

The "revisionism controversy" in the German socialist movement in 1898-9 is often described, with hindsight, as showing that the movement was already rotten. It is held that such central figures in the movement as August Bebel and Karl Kautsky opposed Eduard Bernstein's revisionism only half-heartedly, and really had gone most of the way to accepting Bernstein's gradualist approach.

The nearest that Lenin came to summing up, in "textbook" form, the lessons to be learned by Marxists from Bolshevism and the Russian Revolution, was his famous 1920 pamphlet, Left-wing communism: an infantile disorder.

In November 2018, the longtime Irish-based Trotskyist Rayner Lysaght debated with Sean Matgamna, a founding member of Workers’ Liberty, on Marxist perspectives on Irish history and the Irish revolution.

Such debates, between divergent theoretical traditions, are rare. They are even more rare in Britain on the particular topic of the Irish Question, despite the prospect of a post-Brexit hard border in Ireland.